Re: Pro*C VARCHAR unsigned char Problem

From: AWILSON <awilson_at_rci.rogers.com>
Date: 1997/01/21
Message-ID: <32E52C36.4768@rci.rogers.com>#1/1

Phil wrote:
>
> VARCHAR is actually a struct that contains
> an unsigned char, but I'd rather not have to explicitly type cast each of
> these calls to (char *). Is there an easy
> way around this?
>
> Phil
> philr_at_ibm.net

Aha.. if you're going to use VARCHARs then you should have created a macro to do the job - something like

#define STRTOVAR(x,y) {strcpy(x.arr,y); x.len = strlen(x.arr)}

you can also do one for VARTOSTR and one for VARTOVAR then all you have to code is

        STRTOVAR(array_variable_name, string_variable_name);

makes the code more legible, and you make less mistakes that way. Then, when
the rules change, you just have to amend the macro to '(char *)x.arr'. Also
if you're really smart you can add bounds checking to make sure you don't blow
any string array lengths (aaagh - core dump). Take the plunge now and convert your code!

My thanks go to Dave Edwards at EMC2 in the UK for that brilliant tip. Another lesson painfully learned.

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The above reflect my personal views and in no way are connected with whomsoever I may be working for at this particular point in time.  

Alan Wilson                              Help fight continental drift.
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Received on Tue Jan 21 1997 - 00:00:00 CST